Doorbell



FIG. 1 is a front, side, and top perspective view of a doorbellembodying the new design.

FIG. 2 is a back, side, and bottom perspective view thereof.

FIG. 3 is a front view thereof.

FIG. 4 is a back view thereof.

FIG. 5 is a first side view thereof.

FIG. 6 is a second side view thereof.

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line showing is included for the purpose of illustratingportions of the “article” and forms no part of the claimed design. Thedash-dot-dash lines represent the boundary of the claim.

CLAIM The ornamental design for a doorbell, as shown and described.